Android Calendar类获取时间更新

缺乏、安全感 2023-05-30 09:26 88阅读 0赞

使用Calendar类进行实时获取时间更新。

import java.util.Calendar;  
public class InfoFragment\{

private Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            switch (msg.what) {
                case REFRESH_TIME:
                    updateTime();
                    break;
                default:
                    break;
            }
        }
    };
    
    public void updateTime() {
        Calendar c = Calendar.getInstance();
        int year = c.get(Calendar.YEAR);
        int month = c.get(Calendar.MONTH) + 1;
        int date = c.get(Calendar.DATE);
        int hours = c.get(Calendar.HOUR_OF_DAY);
        int minutes = c.get(Calendar.MINUTE);
        int week = c.get(Calendar.DAY_OF_WEEK);
    
        String hour;
        String minute;
        String weekDay;
    
        if (hours < 10) {
            hour = "0" + hours;
        } else {
            hour = "" + hours;
        }
        if (minutes < 10) {
            minute = "0" + minutes;
        } else {
            minute = "" + minutes;
        }
    
        switch (week) {
            case Calendar.MONDAY:
                weekDay = getString(R.string.one);
                break;
            case Calendar.TUESDAY:
                weekDay = getString(R.string.two);
                break;
            case Calendar.WEDNESDAY:
                weekDay = getString(R.string.three);
                break;
            case Calendar.THURSDAY:
                weekDay = getString(R.string.four);
                break;
            case Calendar.FRIDAY:
                weekDay = getString(R.string.five);
                break;
            case Calendar.SATURDAY:
                weekDay = getString(R.string.six);
                break;
            case Calendar.SUNDAY:
                weekDay = getString(R.string.sunday);
                break;
            default:
                weekDay = "";
                break;
        }
    
        mTimeText.setText(hour + ":" + minute);
        if (mShowYear) {
            mDateText.setText(year + getString(R.string.year) + month + getString(R.string.month)
                    + date + getString(R.string.day));
        } else {
            mDateText.setText(month + getString(R.string.month) + date + getString(R.string.day));
        }
        mWeekText.setText(getString(R.string.week) + weekDay);
        mHandler.removeMessages(REFRESH_TIME);
        mHandler.sendEmptyMessageDelayed(REFRESH_TIME, 1000);
    }